Painless EFI Harness for GM Gen III '99-'06 4.8L/5.3L/6.0L
This harness is designed for the 1999-2006 4.8L, 5.3L, 6.0L mechanical throttle body engines using an LS1/LS6 PCM with a 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual transmission. 2003-2006 engines will require a mechanical throttle body to be installed. 2003-2006 engines which were originally flex fuel will also require Delphi Multec 2 (factory truck style) injectors to be installed. Harnesses do not include connections for the rear O2 sensors or fuel tank pressure sensor but are available separately. Included with this harness is a 10 circuit weatherproof fuse block and GM color coded wires with labels for easy installation.
This standard length harness allows four feet from the back of the intake manifold to where the fuse block and ECM mount. Perfect for those what plan to mount these components under the dash or in the glove box.
This kit includes:
- All new fuel injection harness with OEM fitment connectors and harness breakouts
- OBDII connector, mounting bracket and check engine light
- Rubber grommet
- Mounting hardware
Note: This harness does not support Flex Fuel USCAR injectors.
The fuse block protects the following circuits:
- Air pump & air solenoid
- Canister purge, canister vent, transmission, & park neutral position switch
- Driver side injectors and coils
- Dual 40 amp ignition relays
- Fuel Pump
- Heated O2 sensors, mass airflow sensor, & brake switch
- Pass. side injectors and coils
- ECM B+ & DLC B+
- ECM IGN and malfunction indicator lamp
This harness includes connections for the following components:
- AC Request
- Air Pump
- Air Pump Relay
- Air Pump Solenoid
- Alternator
- Brake Switch
- Cam Position Sensor
- Canister Purge
- Canister Vent
- Crank Position Sensor
- Data Link Connector
- Driver/Pass Front O2 Sensors
- EGR Valve
- Engine Coolant Temperature
- Fan #1 Relay Ground ECM Activation
- Fan #2 Relay Ground ECM Activation
- Fuel Pump
- Fuel Pump Relay
- Fuel Pump Test
- Grounds
- Idle Air Control
- Ignition Coils
- Ignition Switch Signal
- Injectors
- Input Speed Sensor
- Knock Sensors
- Malfunction Indicator Lamp
- MAP Sensor
- Mass Airflow Sensor & Intake Air Temperature Sensor
- Output Speed Sensor
- Park/Neutral Switch
- ECM
- Reverse Lights
- Starter
- Starter Relay
- Tachometer
- Throttle Position Sensor
- Transmission
- VSS Output for Speedometer |